Shader "Custom/EmissiveLaser"
{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
        _Color("Tint Color", Color) = (1, 0, 0, 1)
        _Emission("Emission Strength", Float) = 5.0
        _ScrollSpeed("Scroll Speed", Float) = 1.0
    }
    SubShader
    {
        Tags { "Queue"="Transparent" "RenderType"="Transparent" }
        LOD 100
        Blend One One  // Additive blending
        ZWrite Off
        Cull Off
        Lighting Off

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"

            sampler2D _MainTex;
float4 _Color;
float _Emission;
float _ScrollSpeed;
float4 _MainTex_ST;

struct appdata
{
    float4 vertex : POSITION;
                float2 uv : TEXCOORD0;
            };

struct v2f
{
    float2 uv : TEXCOORD0;
                float4 vertex : SV_POSITION;
            };

v2f vert(appdata v)
{
    v2f o;
    o.vertex = UnityObjectToClipPos(v.vertex);
    float scroll = _Time.y * _ScrollSpeed;
    o.uv = TRANSFORM_TEX(v.uv, _MainTex) + float2(scroll, 0);
    return o;
}

fixed4 frag(v2f i) : SV_Target
            {
                fixed4 tex = tex2D(_MainTex, i.uv);
return tex * _Color * _Emission;
            }
            ENDCG
        }
    }
}